Razor



March 19, 1940. L, RET R AN. 2,194,387

' RAZOR Filed March 8, 1937 FIE-1.

4 {ll/1111111111111 /7 [3 w INYENTUR.

LHHBER'T 'L- ERETEEHHN 2% i? v HTTUHNEE S Patented Mar. 19, 1940 UNITEDSTATES PATENT OFFICE RAZOR Lambert L. Gretel-man,

Santa Monica, Calif as- 1 Claim.

This invention relates to improvements inrazors and has particularreference to that type of razor referred to as a dry shaver.

The principal object of this invention is to produce a shaver which willgive a clean out, one which is simple and economical to manufacture, anda razor which will not pull the beard.

A further object is to produce a device of this character which will beself-adjusting and the ground parts will remain in intimate contact atall times.

Other objects and advantages will be apparent during the course of thhefollowing-description. In the accompanying drawing forming a part ofthis specification and in which like numerals are employed to designatelike parts throughout the same:

Fig. 1 is a side elevation of my razor; Fig. 2 is an end elevationthereof; Fig. 3 is a cross sectional view taken on the line 3-3 of Fig.1; and i Fig. 4 is a cross sectional view taken on the line 44 of Fig.3.

In the accompanying drawing wherein for the purpose of illustration isshown a preferred embodiment of my invention, the numeral 5 designates amotor casing, providing a handle for my razor, with flatends and ofcross sectional oval shape, so that it can be firmly gripped, as will beapparent upon inspection of Figure 2, and suitably mounted within thecasing is an electric motor having connected thereto, conductor wires 6extending through one end of the casing. The motor drives a pair ofparallel shafts I extending through the opposite or outer end of thecasing, and each of the shafts has secured thereto a rotor 8 providedwith spirally arranged cross sectional square threads 9. Surroundingeach rotor is a housing H including an arcuate portion fittinglyreceiving the rotor therein, and the arcuate portion is provided withparallel slots [2, disposed at an inclined angle to the longitudinalaxis of the housing, to substantially follow the curvature of thethreads 9 for co- 4 operation therewith upon rotation of the rotor toprovide a shearing action.

Each shaft is provided with a supporting frame I secured to and,extending from the casing and the outer end portion of the frame is bentat. right angles upon itself for disposal parallel with the outer end ofthe casing to provide an abutment for the outer end of the rotor. Thebent portion of the frame M has a bearing opening therein within whichis joumaled the 55 outer end of the shaft, as clearly shown in Figure 3.

In order to urge the rotor in intimate contact with the slotted surfaceof the housing II, I provide a slot I3 in the frame I and within whichis mounted a leaf spring 16 for disposal between the frame l4 and theadjacent flat wall 5 ll of the housing II. The spring It has a bentouter end disposed in engagement with the outer portion of the frame M,as clearly shown in Figure 3.

The result of this construction is that when 10 the motor is turned on,the rotors 8 will be revolved within the housings; and as the squarethreads in rotating pass the slots l2, it will be understood that aclipping action will take place. By providing the slight pressureagainst the rol6 tor, as previously set forth, it will be evident thatthe parts will always be maintained in intimate contact, thus assuringan even clipping operation, in counter-distinction to the pulling of ahair when a biting action takes place instead 20 of a shearing action.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same and thatvarious changes relative to the material, 25 size, shape and arrangementof parts may be resorted to without departingfrom the spirit of theinvention or the scope of the subjoined claim. Having thus described myinvention, I claim: An electric razor comprising a casing providing ahandle having flat ends and being of cross sectional oval shape,supporting frames secured to and extending from one end of the casingand having their outer end portions bent at right angles upon themselvesfor disposal parallel with said end of the casing, said bent ends havingbearing openings therein, shafts mounted for rotation within said casingand extending through said end thereof, with the outer ends of theshafts journaled in the bearing openings, 0 rotors secured to the shaftsand having spirally arranged threads thereon, housings for the rotorsand including arcuate portions fittingly receiving the rotors, saidarcuate portions being provided with parallel slots inclined to substan-5 tially follow the curvature of the threads for cooperation therewithto provide a shearing ac-. tion, said supporting frames each having aslot therein, leaf springs seated in the slots of the frames fordisposal between the housings and the frames for urging the rotors incontact with the slotted portions of the housings and means within thecasing for driving said shafts. f

LAMBERT L. GRETERMAN. u

